Steam-boiler feeder.



Ne. 6%,4-34. Patented Dan. 2, I900.

T. J. WHITNEY.

STEAM BOILER FEEDER.

(Application filed Fab. 2, 1899.)

(Ha Modem rricn,

TllOlllAS J. W'HITNEY, OF PHILADELPHIA, PENNSYLVANIA.

S'l'lEAWl -BOIILER FEEDER.

SPECIFICATION forming part of Letters Patent No. 640,434, dated January2, 1900. Application filed February 2, 1899. $erial No. 704,264. (N0mode To all whom it may (on/corn.-

Be it known that I, THOMAS J. WHITNEY, a citizen of the United States,residing in the city and county of Philadelphiafitate ofPennsylvania,have invented a new and useful Illlprovementin Steam-BoilerFeeders,which inr provement is fully set forth in the followingspecification and accompanying drawings.

My invention relates to a steam -boiler feeder; and it consists moreespecially of improvements upon a prior patent granted to me in thissame class of invention, wherein I employ a different construction ofauxiliary boiler and use an exterior auxiliary or supplemental casingwhich surrounds the internal boiler or heater and keeps the contentsthereof constantly heated to the requisite degree, said internal boilerbeing heated externally by means of exhaust-steam Within said casing andinternally by means of live steam which is introduced within saidinternal boiler when desired, and provision being made by means of pipesand a suitable valve or valves for regulating the circulation betweenthe main and supplemental boiler or heater.

It also consists of an improved construction of supplemental boiler andits adjuncts.

It further consists of novel details of construction, all as will behereinafter fully set "forth, and particularly pointed out in theclaims.

Figure 1 represents a side elevation of a steam-boiler feeder embodyingmy invention, the auxiliary or supplemental boiler being shown insection. Fig. 2 represents a transverse section on line a; 00, Fig 1.Fig. 3 represents, on an enlarged scale, a sectional View of the valveemployed and its adjuncts. Fig. 4 represents a sectional view of thevalve seen in Figs. 1 and 3.

Similar letters of reference indicate corresponding parts in thefigures.

Referring to the drawings, A designates a main boiler, and B thesupplemental boiler or feed-water heater, located above said mainboiler, said supplemental boiler consisting of an outer shell or casing0, within which is contained the feed-water heater D, it being noticedthat the latter is preferably located eccentrically therein, so that thelower portion of the heater D rests upon the adjacent portion. of theshell or casing 0, whereby a chamber or receptacle G is formed uponeither side for the reception of a body of hot water, as will behereinafter explained.

E designates a steam-inlet pipe which leads into the upper portion ofthe space between the heater B and the casin g 0, whereby steam can beconducted thereinto, said steam 1eaving the casing 0 through the pipe Fand being conducted to any desired point.

Irl designates an inlet-pipe for the feed-water, the same entering thevalve-casing J through the passage K and passing when the valve is inthe proper position through the port L of the valveplug L into thepassage M and pipe N to the upper portion of the heater D. After theheater D is filled to the desired extent the valveplug L is turned intothe position seen in Fig. 3, whereupon it will be seen that the water,which has in the meanwhile been heated to a high degree, flows from thelower portion of the heater, through the pipe P into the chamber Q ofthe valve, and thence through the port It and the pipe S into the lowerportion of the main boiler A. The steam contained in the upper portionof the main boiler A flows therefrom through the pipe T and the passageLinto the pipe N, and thence to the heater D, wherefrom it will be seenthat the live steam from the main boiler When desired is directed intothe feed-water heater or auxiliary boiler D for the desired period, thecontents of which in a short time become heated to substantially thetemperature of said live steam, which temperature is imparted to thecontents of the chamber G, as is evident. By the novel manner of makingthe connections between the pipes N and P and the heads U and V ofthe'casing C it will be seen that the heater D is held in place Withoutnecessitating the employment of other or extraneous fastenings, saidpipes being headed internally, as at W, and having packing- Washers Xadjacent the exterior head U, said Washers being held in place by thenuts Y.

It will be apparent from the foregoing that the water in the heater Dwill always be in a heated condition by reason of its contact with thesteam contained in the casing O, and by securing the heater within itscasing in the manner specified a body of hot water is re tained adjacentthe sides and end of the heater D, which also assists in heating thelatter.

When the valve is in the position seen in Fig. 3, the water in the lowerportion of the heater can readily flow therefrom, since it can flow intothe lower portion of the boiler A, the circulation being continued fromthe upper portion of the boiler through the pipe 4 fire-surfaces isgenerally converted into scale,

this action especially taking place when the water is heated to 275 or325; but by my present improvement the feed-water is conducted from theheater D about two or three inches from the bottom thereof, and sincethe steam-pressure in the heater is the same as that in the main boilerthe deposits or sediment in the water are precipitated and remain in theheater in a granulated form and are easily blown out by steam-pressureand not allowed to enter the main steam-boiler, the blow-off cock beingindicated at Z, and the pipe leading to the heater passing through theouter shell 0 serves to hold the heater 1) in position, as is evident.By thus keeping the main boiler clean and free from scale and sedimentthe safety and durability thereof are greatly increased. I also providea blowoff connection A in the pipe S at apoint near where the waterenters the main boiler, said pipe being thus freed from any accumulationof cold water and allowing hot water only at starting to enter the mainboiler.

In Fig. 4 I have shown a longitudinal sectional view of the plug L andits adjuncts, said plug being contained in the casingJ and in contactwith the set-screw B, whereby said plug contacts with the packing 0 whenthe stuffing-box, cap, or gland D is screwed down. E designates a washerinterposed between the bottom of the plug L and the end of the screw B,the latter being locked in the desired position by means of the jam-nutF.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1-. In a steam-boiler feeder, a main boiler, a supplemental boilerlocated above the same and communicating therewith, said supplementalboiler consisting of a shell or casing, an inner heater eccentricthereto, said casing being provided with chambers at its sides and upperend, and inlet and outlet pipes communicating with said chambers, incombination with means substantially as described for conductingalternately steam or feed-water into said supplemental boiler.

pipes communicating with the space between i said heater and shell orcasing.

3. In a steam-boiler feeder, a main boiler, a supplemental boilerlocated above the same and communicating therewith, said supple= mentalboiler comprising a heater and asur rounding shell or casing eccentricthereto, the heater resting on the lower side of said shell or casing,and said shell or casing extendin beyond one end of the heater, andinlet and outlet pipes communicating with said shell or casing.

4. In a steam-boiler feeder, a main boiler, a supplemental boilerlocated above the same, said supplemental boiler comprising a heater andan outer shell or casing, and pipes communicating with said main andsupplemental boilers, said pipes being connected with the walls of saidshell or casing and heater for holding said parts in assembled position.

5. In a steam-boiler feeder, a main boiler, a su pplemental boilerlocated above the same, said supplemental boiler comprising a heater andan outer shell or casing having heads at one end thereof situatedadjacent to each other, and pipes communicating with the boiler andsupplemental boiler, said pipes passing through and being secured tosaid adjacent heads to hold said heater and shell or casing together.

6. In a steam-boiler feeder, a main boiler, a supplemental boilerlocated above the same, said supplemental boiler comprisinga heater anda surrounding shell or casing with the heads at one end thereof situatedadjacent to each other, and pipes communicating with said boiler andsupplemental boiler, the ends of said pipes communicating with thesupplemental boiler passing through the adjacent heads and being headedon their inner ends, packing around said pipes exterior to said shell orcasing-head, and a gland for compressing said packing and securing saidheads together.

'7. The combination of a main boiler, a supplemental boiler locatedabove the same, pipes common to said boilers, a valve com mon to saidpipes, said valve consisting of a casing J, a plug D, a stuffing-box,cap or gland, D, packing intermediate said plug and stuffing-box, ascrew adapted to engage said plug, a washer intermediate said plug andscrew, and a jam-nut for locking said screw.

8. In a steam-boiler feeder, a main boiler, a supplemental boilerlocated above the same, said supplemental boiler comprising a heater anda surrounding shell or casing located eccentrically thereto wherebywater-holding portion of said main boiler, in combination with ablow-offcock located in said last-mentioned pipe and in the bottom of saidheater for Withdrawing sediments and precipitates therefrom.

9. In a steam-boiler feeder,the combination of a main boiler, asupplemental boiler located above the same, the latter consisting of aheater and a surrounding shell or casing located eccentrically withrespect thereto, means for introducing and withdrawing steam from saidcasing, an inletpipe leading to the upper portion of said heater, adischarge-pipe leading from the lowerportion thereof, a short distanceabove the base of said heater, a valve common to said pipes, a mainboiler having a pipe leading from the upper portion thereof to saidvalve, a pipe leading from the lower portion of the latter to said mainboiler, an inlet-pipe leading to said valve for the introduction offeed-water, the pipe leading from said valve to the upper portion ofsaid heater serving both to conduct feed-water to said heater and alsoas a conduit for steam from the main boiler to saidheater, and blow-offsfor the inlet-pipe to said main boiler and for said heater.

10. The combination with a main boiler and a supplemental boiler locatedabove the latter of pipes common thereto and a valve controlling thepassage of water through said pipes, said valve comprising a casing, arecessed plug located therein, said plug having ashoulder, a glandengaging the casing, packing intermediate said gland and plug,a washerlocated adjacent the opposite end of said plug and a set-screw engagingsaid Washer, said setscrew being provided with a jam-nut for looking thesame.

11. In a steam-boiler feeder, a main boiler, a supplemental boilerlocated above the same; said supplemental boiler consisting of a casking having chambers at its sides and upper end and an inner heaterlocated eccentrically in said casing, and inlet and outlet pipescommunicating with said chambers, in combina tion with means forconducting live steam from said main boiler to the interior of saidsupplemental boiler and means for conducting feed -water also to saidsupplemental boiler.

12. In a boiler-feeder, a main boiler, a supplemental boilerlocatedabove the same, said supplemental boiler comprising an inner heater anda surrounding shell or casing eccentric thereto, inlet and outlet pipesin communication with the space between said heater and shell or casingand pipes N and P and T and S communicating with the upper and lowerportion of said supplemental boiler and main boiler respectively, incombination with a controlling device for controlling the flow of steamfrom said main boiler to the supple mental boiler and the flow of waterfrom said supplemental boiler to said main boiler respectively.

13. In a steam-boiler feeder, a main boiler, a supplemental boilerlocated above the same and communicating therewith, said supplementalboiler consisting of a shell or casing, an inner heater eccentricthereto, said casing being provided with chambers at its sides and upperend and inlet and outlet pipes COlnlIlll nicating with said chambers.

THOMAS J. WHITNEY.

Witnesses E. HAYWARD FAIRBANKS, O. D. MoVAY.

